Erosion at the inner wall of JET during the discharge campaign 2011-2012 in comparison with previous campaigns
Erosion at the inner wall of JET during the discharge campaign 2011-2012 in comparison with previous campaigns
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DOI：
10.1016/j.jnucmat.2014.08.010
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发表时间：
2015
影响因子：
3.1
通讯作者：
S. Krat;Y. Gasparyan;A. Pisarev;I. Bykov;M. Mayer;G. D. S. Aubin;M. Balden;C. Lungu;A. Widdowson;J. Contributors
中科院分区：
文献类型：
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作者：
S. Krat;Y. Gasparyan;A. Pisarev;I. Bykov;M. Mayer;G. D. S. Aubin;M. Balden;C. Lungu;A. Widdowson;J. Contributors
在2011-2012年第一次类似热核实验堆的壁放电运动中，使用长期样品研究了Be和W标志层的侵蚀。标记安装在内墙防护限制器(IWGL)之间的Be涂层Inconel瓷砖中。在曝光前后使用卢瑟福背散射(RBS)进行分析。所有的样品都表现出强烈的侵蚀。结果分别与2005-2009年和2001-2004年的Be和W侵蚀率数据进行了比较，当时JET是用碳墙操作的。2005-2009年使用的是Be和C样品，2001-2004年使用的是W样品。2001-2004年和2011-2012年的平均W侵蚀速率以及W侵蚀的环向和极向分布是相同的。2011-2012年活动期间Be的平均侵蚀率比2005-2009年活动期间减少了约两倍，并显示出不同的极向分布。内喷流类ITER壁的平均侵蚀速率比碳壁的平均侵蚀速率小4-5倍。
The erosion of Be and W marker layers was investigated using long-term samples during the first ITER-like wall discharge campaign 2011–2012. The markers were mounted in Be coated Inconel tiles between the inner wall guard limiters (IWGL). They were analyzed using Rutherford backscattering (RBS) before and after exposure. All samples showed strong erosion. The results were compared to the data for Be and W erosion rates for the 2005–2009 and the 2001–2004 campaigns, respectively, when JET was operated with a carbon wall. In 2005–2009 Be and C samples were used, and W samples were used in 2001–2004. The mean W erosion rates and the toroidal and poloidal distributions of the W erosion were the same for the 2001–2004 and the 2011–2012 campaigns. The mean erosion rate of Be during the 2011–2012 campaign was smaller by a factor of about two compared to the 2005–2009 campaign and showed a different poloidal distribution. The mean erosion rate of the inner JET ITER-like wall was about 4–5 times smaller than the mean erosion rate of the carbon wall.